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- Cummins Marine Forum Topics
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ZF 220A – Oil Service
This topic has 4 replies, has 2 voices, and was last updated by
2 years ago May 10, 2021 at 12:59 pm hi, I know this is not the first tread about oil service on a ZF 220A.:) It`s a twin installation. Cummins 6bta m2 300hp 1990. I`ve read this one aswell: Checking & Changing the Oil on your ZF Marine Transmission I`m still a bit confused.. The service manual says the oil level has to checked with running engine and neutral selector (gear) “overfill” if necessary. Oil level on my gear box is over max level. (cold engine, not ru…
4 RepliesJune 10, 2021 at 7:34 pm No gasket– Reusable copper washer that will always benefit with some Rectorseal 5 or Teflon tape.Last Post by:
posted: 2 years ago
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ZF 220A
This topic has 8 replies, has 3 voices, and was last updated by
2 years ago May 26, 2021 at 7:17 pm I had a recent experience where the port side transmission was a lot hotter than the starboard side. I do not have a temp or pressure gauge on these so I’m unsure of exact temp. The engine temp was steady and normal. I have removed the oil cooler and am in the process of cleaning and reinstalling. I also plan to change the oil. I would like to understand what is needed to add a temp and pressure gauge as well. Not sure where the best loca…
8 RepliesMay 31, 2021 at 11:50 am Nothing wrong with your temps ——————– 130F-150F is a GOOD temp.. Too cold works, but is not ideal. Capacity is in the 3-5 qts rangeLast Post by:
posted: 2 years ago
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ZF torsional bushing plate
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago May 23, 2021 at 9:14 pm Can anyone tell me what the torque is on the eight bolts that attach the torsional bushing plate to the flywheel of a 6bta?..The plate is a 280. Thanks
1 ReplyMay 24, 2021 at 5:28 am 3/8-16 TPI Grade 8 — 30 lbs-ish with lubeLast Post by:
posted: 2 years ago
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Transmission zf 80 IV Vent
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
May 18, 2021 at 4:55 pm I changed the breather on my ZF 80IV transmission. Is it normal that there is pressure when I unscrew the deep stick.
2 RepliesMay 19, 2021 at 4:16 pm Thank youLast Post by:
posted: 3 years ago
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ZF 80IV Trolling valve installation options
This topic has 5 replies, has 3 voices, and was last updated by
3 years ago May 11, 2021 at 12:32 pm All, Here is the situation I have: 1. Teleflex controls push/pull at the helm -> Potentiometer -> Transmission Control Module -> ZF Marine Electronic ATF Series Shift w/o trolling valve. 2. I’ve purchased a newer Shift with a trolling valve on it, (images attached) My understanding is that if I replace new shift with the valve on it, my system will be able to control forward / reverse shifting solenoids but there is no w…
5 RepliesMay 13, 2021 at 11:45 am Sounds like you have a reverse of my Glendinning controls. Mine go from electronic throttle control to cables to drive the engine and gear controls via servos. I have mechanical engine and gear controls. My guess is you will need a separate lever and cable for the trolling valve and a separate controller to take the cable controls to an electronic signal. The Glendinning works the same but opposite. I have one electronic control that handle…Last Post by:
posted: 3 years ago
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Hurth 630 beep at certain rpm
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago May 10, 2021 at 7:39 am Iām stumped I get a constant beep when in gear at rpm 1100 to 1500. In neutral, no beep. If Iām in gear and at 1500 and itās beeping, I just put it down to idle and beep goes away I thought it was my engine but in neutral there is no beep at any rpm. But in fwd or reverse it does beep. Keep in mind, it all works great and engine runs perfect at any rpm. I can cruise at say 2500 Rpm and all is fine. No slipping, no odd noises etc. shifts fine. …
1 ReplyMay 10, 2021 at 5:54 pm I am assuming you have Mercury SmartCraft electronics ? ……………….If so, I’d guess it’s related to one of the senders on the transmission that the electronics interpret.. Help on this will most likely only come from the Mercury tech help line.. TonyLast Post by:
posted: 3 years ago
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HSW 630 V1 pressure loss AFTER slowing down
This topic has 3 replies, has 2 voices, and was last updated by
3 years ago
April 29, 2021 at 7:24 pm I was wondering if you could steer me in the right direction. Had a trans cooler fail 20 minutes into the season. Salt water in the trans. I flushed it twice that day with ATF, got a new cooler installed a couple days later and flushed more times until ATF coming out looked like what went in. Boat was slipping in F and R (at dock). Bought a mechanical gauge and saw pressure was 330 psi in N, and dropping down to almost nothing in F and R. T…
3 RepliesMay 2, 2021 at 10:57 am New ZF filter and o rings and followed the video. Extended testing today at various speeds and planing. Thanks very much Tony and Rob. Hope it stays good! Again sincere thanks!Last Post by:
posted: 3 years ago
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reverse gear ideas
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago April 26, 2021 at 8:25 am Presently running a 6BTA 250hp cummins in a workboat. It has a velvet drive 2.5:1 gear. I’m looking to upgrade the gear to something more robust. I’ve seen a few MG506/507s around. I’ve been advised that these might be a good candidate for replacement. Most likely the boat will need a new shaft to make up the different case measurements. I am also thinking of changing the gear ratio to 2:1 to bring a new prop to 23″ squar…
1 ReplyMay 1, 2021 at 5:27 pm The MG506 & MG507 are both “good ol” gears, but both have been out of production for over 20 yrs now.. Lots on them still around and both are easy to rebuild as gears go as long as the gear is in “still working condition” and is not a total rust bucket. With that said, the MG507 would not be an easy gear to adapt to any B series Cummins ( clearance issues with the turbo and possibly other things). From experience, th…Last Post by:
posted: 3 years ago
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Gear pressure and temperature transducers
This topic has 4 replies, has 4 voices, and was last updated by
3 years ago March 10, 2020 at 9:46 am I did a search but couldn’t find anything. Does anyone know what gear temp and pressure sensors I need for my QSB 380HP? I’m looking for something that will plug into the existing harness and read through the engine ECM. Thanks in advance.
4 RepliesApril 30, 2021 at 2:42 pm I am working directly with Cummins on why your instruments are not linking up with the senders properly… we’ll get to the bottom of everything. I still think it’s in the software of the SmartCraft system… I’ll follow up next week.Last Post by:
posted: 3 years ago
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ZF flush
This topic has 7 replies, has 2 voices, and was last updated by
April 16, 2021 at 4:27 pm Hello I spoke to someone in parts today who gave me good advice on flushing sea water from my HSE 630V1. Cooler failed 20 minutes after launch Saturday. Was 20 minutes out at 2000 rpm. Gas 350 mercs. Shut down port engine. Got back to marina and realized water in trans and oil atf in exhaust. Drained and refilled with ATF twice that day but didnāt run it again that day. New cooler arrived Tuesday and installed it. Forward and revised work a co…
7 RepliesApril 28, 2021 at 6:39 pm Took it out for a cruise today. No problem at a constant cruise. I say in neutral so on average 330 PSI. Shifting in F or R dropped momentarily and came right back up. Problem arose when backing down from 3500-3700 rpm. As throttle got backed off pressure dropped and eventually went to zero. Shut down for a few minutes and retested. Same issue. Good pulling and good at planing speed but drops pressure and slips backing down. Same happened…Last Post by:
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ZF transmissions slow shifting.
This topic has 19 replies, has 6 voices, and was last updated by
3 years ago December 30, 2020 at 9:37 am I bought this Carver 53 1999 last year with twin Cās coupled to ZF 301A.2 transmissions. On both engines the delay to shift in forward or reverse is 2 seconds. The controls account for maybe .25 seconds and transmissions delay after lever is moved is 1.75 seconds. Oil is 30 grade. I have a video of the shift delay but cant get it on this site. This delay is very annoying on windy days. What can be done, and any reference for a reliable mechani…
19 RepliesApril 23, 2021 at 8:06 am I have now replaced the Twin Disc EC-100 electronic controls that were said by dealer to be obsolete since 20 years.(were installed new 21 years ago)!!!!! Shifting is still about 1.75 seconds on stopwatch. Both trans are the same. Still trying to find a solution.Last Post by:
posted: 3 years ago
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ZF 280 A
This topic has 3 replies, has 2 voices, and was last updated by
3 years ago April 19, 2021 at 4:56 pm Hello, I have a ZF 280A behind a Cummins 6 bta that was rebuilt by SBM at least 12 years ago and it still runs great. My issue is that over the winter I changed the fluid 30 weight in the trans. The first run out yesterday resulted in a strange noise from the trans about 600 ft from the dock as soon as I raised the revs from idle. I shut it down and was towed back. So now when I put the trans in any gear except neutral I get the noise and the s…
3 RepliesApril 20, 2021 at 5:55 am If the torsional coupling has failed, you need to pull the gear and just replace it ( the coupling) … This in just “Mechanics 101”Last Post by:
posted: 3 years ago
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oil leak from early zf220a transmission
This topic has 5 replies, has 4 voices, and was last updated by
3 years ago
December 1, 2019 at 9:03 am It appears i have two leaks from my zf transmission. one is coming from what appears to be the bottom of the bell housing where there is an empty bolt hole. This oil appears more blackish, possibly from the engine as I have changed the transmission oil mid season and it is cleaner than what appears to be coming out of this bolt hole. Can I plug this bolt hole, or is it empty for a reason. The second leak I’m not sure where it is coming fro…
5 RepliesApril 19, 2021 at 1:35 pm Could be residual oil from the old crank seal leak, or transmission output seal. Did you clean up real good when you had it off? Trans rear seal often leaks when shaft is out of alignment.Last Post by:
posted: 3 years ago
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ZF220A Shift Lever Positions
This topic has 8 replies, has 3 voices, and was last updated by
3 years ago
December 14, 2020 at 6:57 am I am planning the installation of two ZF220A transmissions in a counter rotation set up. Can anyone tell me the relationship of the gear selection lever position to output flange rotation? Thanks. Rob
8 RepliesApril 12, 2021 at 2:36 pm Just to retire this topic, be advised that rotating the shift shaft clockwise results in enginewise rotation of the transmission output shaft.Last Post by:
posted: 3 years ago
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Twin Disc MG5050 gear pressure in neutral
This topic has 3 replies, has 2 voices, and was last updated by
3 years ago April 11, 2021 at 7:45 am Trying to find out what the operating pressure range is in neutral for a twin disc MG5050 paired with a cummins 6BTA 330. I installed the SMX alarm panel with gear pressure sensor and alarm goes off when gear is in neutral. When in gear the alarm stops. The alarm sensor is factory set with a setpoint of 40psi. I installed a manual gauge to measure the true pressure and in neutral i am getting 30 psi and in gear getting 340psi, both at idle, …
3 RepliesApril 12, 2021 at 1:44 pm Sounds right, you’ll see it will not take much of a turn of the hex to make the needed adjustment. Should be less than a full resolution. A slight chirp on shifting in/out of gear is how mine are set and might be what you prefer.Last Post by:
posted: 3 years ago
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Fluid Analysis in ZF – High Copper
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
April 9, 2021 at 2:24 am Just received the fluid analysis (attached) from survey and could use some help with the results. All looked good, except for ZF325-1A trannies, both with high copper readings of 186/196. The 2005 gear have low hours ~775 (high marine age), the fluids were last changed in March 2020, and accumulated ~20hrs since then. No other samples available to compare. My research seems to suggest the elevated copper readings could be related to lack of u…
2 RepliesApril 11, 2021 at 7:43 am Thanks Tony. I also spoke with the fluid tech and given the history, he was not concerned. I went ahead and signed the contract to buy the boat and first step after closing is fluids/filters/belts, etc. She’ll have about a 50hr trip home and I’ll take another fluid sample then and start on a routine testing schedule.Last Post by:
posted: 3 years ago
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ZF 220 TRANSMISSION – Neutral still creeps ahead
This topic has 4 replies, has 4 voices, and was last updated by
3 years ago August 25, 2019 at 3:51 pm After the engine has been used for a while, and placing the vessel in neutral the boat creeps forward. It does not creep as if it was in gear at idle, much slower, but still goes forward. We have an electronic shifter. I did see a wire labeled Reverse Gear not attached, but I do not see where this might go. I do not have a wiring Schematic. Any ideas would be gratefully appreciated. Thank You Barry
4 RepliesApril 7, 2021 at 3:38 am Dave, It can be TIGHT especially if it’s your first time – bring a beaker bar.Last Post by:
posted: 3 years ago
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ZF 220A trolling valve repair
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago April 1, 2021 at 7:39 am I have been extremely happy to get your great advice about the lack of power, and fuel smoke issue on the ’91, diesel powered Stalker I just bought. Thankfully you talked me through finding it was caused by a bad turbo on the 30 year old 6BTA5.9M2. I am now ready to move on to the trolling valve repair on the ZF IRM220A, but I would like to know if there is a gasket/seal kit available from SB Marine for just the mechanical trolling valve?…
1 ReplyApril 6, 2021 at 5:40 am #1————-The ZF220A is not always simple to deal with.. They have had their issues over the years. But they can be messed with on the bench. …Just common “o’ rings–no gaskets that I can remember. #2———-You need an accurate and properly installed 0-400-ish gauge at the dash so you can “SEE” what is going on. #3– Until you determine how and it’s working, y…Last Post by:
posted: 3 years ago
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NEW PRM 750 D Overheating and PRM not helpful
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago
March 25, 2021 at 10:12 pm Cummins 6BTA Repower complete and went for sea trial. Arrived at the boat and mechanic on the phone with supplier trying to troubleshoot why starboard gear was 125F at the dock (port was reading 80F) – both gears are new. We were told by the supplier to go for the sea trial and if the gear reached 200F, shut it down and head back. Engines ran great and cool (all coolers taken to radiator shop, boiled and rodded) but starboard gear got too…
2 RepliesMarch 28, 2021 at 8:05 pm Thanks Tony! I’ll get you some photos if you will let me know where I should look for the cooling system you want me to photograph. I’m in Seattle and the PRMs were already on the boat and I replaced the port gear in 2019 with original OEM. Then came the repower in 2020 and the starboard gear was suspect so replaced that one as well with same brand. Purchased from and tested by Harbor Marine in Everett, WA. England says in spec but…Last Post by:
posted: 3 years ago
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ZF 220A Dipstick Reading
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago March 26, 2021 at 11:53 am Just purchased your ZF transmission oil change hose kit. Drained oil out of each transmission with a total measure just over 5-1/2 quarts. The manual states to remove the dipstick by unscrewing counter and clockwise. Mine does not screw in but is retained by three O-rings and is push/pull. But it says to measure do not screw in (“Insert dipstick do not screw”). The O-ring seal set takes up over 1 to 1-1/4″ of depth from f…
3 RepliesMarch 27, 2021 at 6:59 pm Remember, a tad less than the upper mark in way better that a little more.. Between the marks is always best..Last Post by:
posted: 3 years ago
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ZF 220A – Oil Service
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